
Jeffrey Cobb
- Date of Birth: 1982-07-11
- Place of Birth: Honolulu, Hawaii, U.S
Biography
Jeffrey Cobb is an American professional wrestler and former amateur wrestler. As of May 2025, he is signed to WWE, where he performs on the SmackDown brand under the ring name JC Mateo. He is best kn... Jeffrey Cobb is an American professional wrestler and former amateur wrestler. As of May 2025, he is signed to WWE, where he performs on the SmackDown brand under the ring name JC Mateo. He is best known for his tenure in New Japan Pro-Wrestling (NJPW), where he was a member of United Empire. In NJPW, he is a former one-time NEVER Openweight Champion and a three-time IWGP Tag Team Champion. He also wrestled for various promotions, such as Lucha Underground (as the masked wrestler Matanza Cueto) where he is a former one-time Lucha Underground Champion, Ring of Honor (ROH), where he is a former one-time ROH Television Champion, as well as Pro Wrestling Guerrilla (PWG) where he is a former one-time PWG World Champion, one-time World Tag Team Champion, and is also the winner of the 2018 Battle of Los Angeles. As an amateur wrestler, Cobb represented Guam at the 2004 Summer Olympics, where he became the nation's flag bearer in the opening ceremony and competed in the men's light heavyweight freestyle category. He transitioned to professional wrestling in 2009.

NJPW G1 Climax 29: Day 19 (Final)
Action, Drama • 2019 August

PWG: 2017 Battle of Los Angeles - Stage One
• 2017 September

NJPW Power Struggle ~ Super Junior Tag League 2023
• 2023 November

ROH: 17th Anniversary
• 2019 March

NJPW G1 Climax 29: Day 17
Action, Drama • 2019 August

Bar Wrestling 6: Head Of Household
Drama, Action • 2017 September

ROH & NJPW: Global Wars - Lewiston
Action • 2018 November

PWG: Game Over, Man
• 2017 April

NJPW G1 Climax 29: Day 7
Action, Drama • 2019 July

NJPW G1 Climax 29: Day 13
Action, Drama • 2019 August